In the introduction to her coffee-alcohol-dairy-sugar-shellfish-wheat-meat-and-soy-free (phew) cookbook, the actress who's been busily evolving her lifestyle brand Goop.com in past few years, describes her struggle to find the right diet for her family.

"Every single nutritionist, doctor and health-conscious person I have ever come across . . . seems to concur that [gluten] is tough on the system and many of us are at best intolerant of it and at worst allergic to it.

"Sometimes when my family is not eating pasta, bread or processed grains like white rice, we’re left with that specific hunger that comes with avoiding carbs."

However, nutritionists have responded to her observations with concern.

The Daily Mail reports that public health nutritionist Yvonne Wake says Miss Paltrow is being ‘foolish’ and could be doing her children harm.

While, Yahoo.com reports that twitter users have also been unimpressed by what the 40-year-old mum feeds her two kids (Apple, eight, and Moses, six).